Polyethylene-graft-maleic anhydride is widely used as a compatibilizer in polymer blends and composites. It enhances the adhesion between polyethylene and other materials, such as glass fibers, fillers, or polar polymers, improving mechanical properties and stability. In packaging, it is employed to create multilayer films with better barrier properties and strength. Additionally, it is utilized in adhesive formulations to improve bonding performance on non-polar surfaces. The chemical also finds applications in coatings, where it enhances surface adhesion and durability. In the automotive industry, it is used to modify plastics for improved impact resistance and thermal stability. Its ability to act as a coupling agent makes it valuable in wood-plastic composites, ensuring better integration of components.